【摘要】 染料废水是环境危害极大的一类废水,可用CaO2对水溶性染料阳离子蓝废水进行脱色处理。考察了各种反应条件对脱色率的影响,并且对CaO2的脱色反应机理进行了分析。实验结果表明:染料的初始浓度为25mg/L时,在pH值为2～3,CaO2用量为150mg/L,FeSO4·7H2O用量为150mg/L,反应时间为60min的条件下,无需紫外光照,脱色率可达到近100%。由此可见,过氧化钙是一种有效、安全、无毒的"环境友好型"绿色水处理剂,在染料废水处理方面有较好的应用前景。更多还原

【Abstract】 The decolorization of cation blue X-GRRL dye wastewater with CaO₂ was studied, and the effects of various factors on the decolorization rate of the dye were investigated. The results show that the appropriate conditions are as follows[CaO₂]=150 mg/L,[FeSO₄·7H₂O]=150 mg/L,t=60 min, pH=2³, unilluminated by UV when the initial concentration of the dye is 25 mg/L. Under these conditions, the decolorization rate can reach about 100%. Therefore, CaO₂ is an effective, economical, safe, nontoxic, environmental benign water treatment reagent. The reaction mechanism was discussed through the analysis of the abosrbency curves obtained.更多还原